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CHAPTER 3
Software Architecture Overview
•
Understanding the QFabric System Software Architecture on page 31
•
Understanding the Director Software on page 32
•
Understanding Partitions on page 33
•
Understanding the QFabric System Control Plane on page 35
•
Understanding the QFabric System Data Plane on page 38
Understanding the QFabric System Software Architecture
Supported Platforms
QFabric System
The software architecture for the QFabric system environment has been designed to
provide a high-speed, low-latency, nonblocking fabric for data center traffic. This topic
explores how the software architecture for a QFabric system supports these goals.
Key components of the QFabric system software architecture include:
•
A single administrative view of all QFabric system components provides unified
management, configuration, monitoring, and troubleshooting of the QFabric system.
This view is provided by the QFX Series Director software running on the Director group.
A primary administrator can access the unified view through the default partition.
•
A fabric control protocol enables rapid transport of data traffic between QFabric system
components. This unique feature of the software architecture distributes route
information for each device within the QFabric system, and removes the need to run
spanning-tree protocols inside the QFabric system network.
•
A fabric management protocol provides rapid transport of control traffic between
QFabric system components. This protocol helps identify and initialize QFabric system
resources, supports device redundancy, and supports management communication
throughout the QFabric system.
•
A control plane network that is separate from the data plane network provides high
availability for the QFabric system.
The software also provides access to relevant features in the Junos operating system
(Junos OS) that support QFabric system functionality. Support is available for most
switching features available on EX Series Ethernet switches and many routing features
available on M Series, MX Series, and T Series routing platforms.
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